DTC B1143 13: IG2 Relay Control Circuit Malfunction: Notes
WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1143:13 (FRONT BODY CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSES
| Description |
IG2 relay control circuit malfunction |
| Detection condition |
- Front body control module (FBCM) detects an open circuit in the IG2 relay control circuit for 2 s or more
with the ignition switched ON (engine off or on).
|
| Fail-safe function |
Not applicable |
| Possible cause |
- Start stop unit connector or terminal malfunction
- Front body control module (FBCM) connector or terminal malfunction
- Open circuit in the wiring harness between start stop unit terminal 2D and front body control module (FBCM) terminal 2U
- Start stop unit malfunction
- Front body control module (FBCM) malfunction
|
 Courtesy of MAZDA MOTORS CORP.
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